Do not go any bigger on the capacitors as the inrush charging current can blow fuses. Mounting the capacitors can be a pain. I try to use tie wraps and if there is nothing to tie them to, screw down small length of aluminum angle stock with tie wraps under it and wrap them around the cap to hold it against the aluminum.

If you look at the engine compartment photo of my car in my profile here on the forum you will see the grey capacitor mounted with tie wraps just to the left of the MSD ignition box.

I think that it would be quite easy to do. On my car I have my alarm system setup so that if it is tripped the electric fuel pump is disabled until I reset the alarm. You should be able to do something that disables any of the following, fuel pump, ignition or starter. Just put a relay in line that is normally closed and set it up so that a signal from onstar latches it in the on position. You will need to find out what kind of output onstar has to do the interface. For example if they send out a signal that holds an output at ground then you can connect 12V to the relay and the onstar output grounds the relay coil turning it on and disconnecting what ever you have the relay connected to.

“I think that it would be quite easy to do. On my car I have my alarm system setup so that if it is tripped the electric fuel pump is disabled until I reset the alarm. You should be able to do something that disables any of the following, fuel pump, ignition or starter. Just put a relay in line that is normally closed and set it up so that a signal from onstar latches it in the on position. You will need to find out what kind of output onstar has to do the interface. For example if they send out a signal that holds an output at ground then you can connect 12V to the relay and the onstar output grounds the relay coil turning it on and disconnecting what ever you have the relay connected to.

“Even easier just put a blank tune into another position. In the ecu so when selected the car will not run. Hide the switch and it won't matter what other stuff they can hot wire it won't run.

Both sound like very good viable options, thank you for taking the time to think about it....but,dont understand what a blank tune is. Are you saying that the 2.0 can accept multiply tunes, wasnt aware of that! So, you would hook up a switch (+ or -) depending on on star with a blank tune

“anyone know where i can buy a female connecter, one like the one being used on the xfi harness at the cam/hall effect. FAST doesnt have one(weird)
any help would be great

i want to tie into my dual sync(crank and cam signal) and use the male connecter

Am curious why you are considering the XIM. A TPI engine is RPM limited so you ignition requirements would be easily met with the MSD box and a conventional ignition. From my prospective you will end up spending a bunch with little gain. Additionally, regardless of what ignition you use a crank trigger is better than using the distributor as the trigger signal source because of the increased accuracy of the crank trigger. I have compared the output of my crank trigger and the distributor using a dual trace scope and there is a lot of variation in the timing coming form the distributor.

“Am curious why you are considering the XIM. A TPI engine is RPM limited so you ignition requirements would be easily met with the MSD box and a conventional ignition. From my prospective you will end up spending a bunch with little gain. Additionally, regardless of what ignition you use a crank trigger is better than using the distributor as the trigger signal source because of the increased accuracy of the crank trigger. I have compared the output of my crank trigger and the distributor using a dual trace scope and there is a lot of variation in the timing coming form the distributor.

Denis, i always value your input, and thank you for all the help youve provided to me over the years, and yet again you provide valid points! But, the crank trigger has just gotten in the way with the pump of my dry sump system that i want to use( steep inclines). So, one has to go, and i choose the trigger over blowing up my engine

i agree with a more accurate reading, but im not sure if it would work underwater or covered in mud, plus the fact of getting rid of noise from the rotor and cap.should clean up my compartment w/o all those ugly spark plug wires

im not sure about the rpm, maybe you could enlighten me.....
i think i can still go back to the crank trigger if need be, all parts are in house, so there is no turning back on the XIM. im really a points and carb kinda guy, so im just trying to broaden my horizens.

got a question......is a digital ground the same as a power ground? Reason i ask is because i am in the process of hooking up my crank trigger on my XIM, and the only ground at the harness in this location is a digital ground. Pin A will be red, and Pin B will be black, diregarding the pink wire at that same location in the harness

Hook up the crank trigger to the digital ground and you should be fine.

I got a little lost when reading what you said in your June 1 post as the connections you are making is to loop the discrete crank input and leave the inductive crank input active for an inductive pickup. However you mention that you want to make the crank sensor go from inductive to discrete so the question is what kind on sensor are you using?

If it is inductive connect it to Red, A1 and to digital ground such as the Black/white wire going to B1 and the wiring you mention in your June 1 post is correct.

thanks for the reply.....yeah, i get crossed up in the terminoligy between discreet and inductive. since i have to loop the crank output on the XFI, i want to use that cable to connect my crank trigger to A1on my XIM box, has the right connecter. just think it will be a cleaner install